A Suspended Six-Port Transformer-Based Power Divider for 2.4 GHz Applications

作者：Huang Wen Hui; Huang I Yu; Syu Wun Hong; Sung Chia Lung; Hsieh Chia Hsu^*

来源：Micromachines, 2017, 8(4): 118.

DOI：10.3390/mi8040118

• transformer-based
• power divider
• six-port
• suspending structure
• wireless applications

This paper presents a transformer-based power divider with six-port suspending structure for 2.4 GHz wireless applications. The proposed power divider, which is featured with chip size (2.9 mm x 2.8 mm x 21 mu m), was constructed by an 8-mu m-thick Cu bottom electrode, a 5 mu m-height supporting copper post, and an 8-mu m-thick suspended spiral copper conducting layer with a 13 mu m-air gap. The main structure included two transformers and six input/output matching capacitors for simultaneously achieving two single-to-differential paths so that the chip size of the complex multiple-ports transceiver could be reduced. According to the results, the proposed divider has characteristics of the radio frequency (RF), and its input return losses are around 10 dB, output return losses are beneath 10 dB, and minimum amplitude imbalance is below 1.5 dB and less than 1 degrees phase imbalance at 2.4 GHz operating frequency.

• 出版日期2017-4
• 单位中山大学